Wireless modem

Wireless modem

Mobile phones can be employed as data modems to form a wireless access point connecting a personal computer to the Internet (or some proprietary network). In this use the mobile phone is providing a gateway between the cellular service provider's data network technology and Point-to-Point Protocol (PPP) spoken by PCs. Almost all current mobile phone models support the Hayes command set, a standard method of controlling modems. To the PC, the phone appears like an external modem when connected via serial cable, USB, IrDA infrared or Bluetooth wireless.

Wireless data modems are also used in the Wi-Fi and WiMAX standards, operating at microwave frequencies, to give a laptop, PDA or desktop computer an access point to a network. If combined with VoIP technology, these computing devices can achieve telephony capability to make and receive telephone calls.


While some analogue mobile phones provided a standard RJ11 telephone socket into which a normal landline modem could be plugged, this only provided slow dial-up connections, usually 2.4 kilobit per second (kbit/s) or less. The next generation of phones, known as 2G (for 'second generation'), were digital, and offered faster dial-up speeds of 9.6kbit/s or 14.4kbit/s without the need for a separate modem. A further evolution called HSCSD used multiple GSM channels (two or three in each direction) to support up to 43.2kbit/s. All of these technologies still required their users to have a dial-up ISP to connect to and provide the Internet access - it was not provided by the mobile phone network itself.

The release of 2.5G phones with support for packet data changed this. The 2.5G networks break both digital voice and data into small chunks, and mix both onto the network simultaneously in a process called packet switching. This allows the phone to have a voice connection and a data connection at the same time, rather than a single channel that has to be used for one or the other. The network can link the data connection into a company network, but for most users the connection is to the Internet. This allows web browsing on the phone, but a PC can also tap in to this service if it connects to the phone. The PC needs to send a special telephone number to the phone to get access to the packet data connection. From the PC's viewpoint, the connection still looks like a normal PPP dial-up link, but it is all terminating on the phone, which then handles the exchange of data with the network. Speeds on 2.5G networks are usually in the 30-50kbit/s range.

3G networks have taken this approach to a higher level, using different underlying technology but the same principles. They routinely provide speeds over 300kbit/s. A further evolution is the 3.5G technology HSDPA, which has the capacity to provide speeds of multiple Megabits per second.

Service Providers

There are competing common carriers broadcasting signal in most nations of the earth. Some of these Cellular networks and the carrier's service plans are:

North America

* Canada providers
** List of Canadian mobile phone companies

* United States providers
** T-mobile
** AT&T Mobility
** Verizon Wireless
** Sprint Nextel Corporation
** Alltel


* United Kingdom providers
** T-mobile
** Vodafone
** O2 plc
** Orange SA
** 3 (telecommunications)
* Spanish providers:
**Orange (brand)


* India providers
** Airtel
** Vodafone Essar
** Reliance Mobile
** Virgin Mobile India


* Australia providers
** Telstra
** Optus
** 3 Mobile
** Virgin Mobile
** Vodafone

Device Manufacturers

* Danger
* Freewave Technologies
* HTC (includes Qtek and Dopod)
* Hewlett Packard (HP)
* Huawei
* LG Electronics
* Motorola
* Nokia
* Novatel Wireless
* Panasonic
* RIM (BlackBerry)
* Samsung
* Sony Ericsson
* Qualcomm


* GPRS (2.5G)
* UMTS (3G)
* GPRS Core Network
* IP Multimedia Subsystem
* HSDPA (3.5G)

See also

* Smartphones
* Access Point Name (APN)
* [http://www.dovado.com/umr DOVADO USB Mobile Broadband Router (UMR)] is a low-cost router which supports USB modems. Offers 4 LAN ports, 802.11b/g WiFi, WAN and 2 USB2.0 ports for full power to the 3G USB modem.
* [http://www.infoferenda.eu Antennas and accessories for wireless modems]

External links

* By John R Chang
** [http://homepage.mac.com/jrc/contrib/tzones/ How To Use Your GSM Cell Phone as a Bluetooth Modem on Mac OS X]
** [http://homepage.mac.com/jrc/contrib/mobile_office/ How To Use Your CDMA Cell Phone as a USB Modem on Mac OS X]
** [http://groups.yahoo.com/group/maccellphone/ Support Group for Chang's pages]
* By Ross Barkman
** [http://www.taniwha.org.uk/gprs.html Table of settings by nation & network for APN, UserName, Password, DNS, SMTP, etc]
** [http://www.taniwha.org.uk/ Modem scripts (drivers) for Mac OS X]
* Software
** FreeBSD and Linux OS
*** [http://gprsec.hu/ | GPRS Easy Connect] is a free program which supports over 700 phones and over 270 service providers
** Windows XP OS
*** Motorola Phone Tools - [http://motorola.digitalriver.com/DRHM/servlet/ControllerServlet?Action=DisplayProductDetailsPage&SiteID=motostor&Locale=en_US&Env=BASE&productID=40171400 motorola.com]
*** Samsung PC Studio - [http://www.samsung.com/support/productsupport/download/FileView.aspx?cttfileid=1127840&type=Mobile+Phone&typecode=100100&subtype=Mobile+Phone&subtypecode=100101&cmssubtypecode=&model=SGH-T629| download]
*** Nokia PC Suite - [http://www.nokiausa.com/support/software/main| download]
*** Sony Ericsson PC Suite - [http://www.sonyericsson.com/spg.jsp?cc=gb&lc=en&ver=4000&template=ps1_1_3_4_1&zone=ps&lm=ps1_1&pid=10101&fid=9926&esi=true| download]

*** Mobile Router - [http://www.serialrouter.com/basics/mobile-router.html Mobile Router]

Wikimedia Foundation. 2010.

Look at other dictionaries:

  • wireless modem — noun A modem fitted with an antenna that transmits and receives using radio waves …   Wiktionary

  • Modem — For other uses, see Modem (disambiguation). A modem (modulator demodulator) is a device that modulates an analog carrier signal to encode digital information, and also demodulates such a carrier signal to decode the transmitted information. The… …   Wikipedia

  • Wireless LAN — This notebook computer is connected to a wireless access point using a PC card wireless card …   Wikipedia

  • Wireless broadband — is a fairly new technology that provides high speed wireless internet and data network access over a wide area.The term broadbandAccording to the 802.16 2004 standard, broadband means having instantaneous bandwidth greater than around 1 MHz and… …   Wikipedia

  • modem — mo‧dem [ˈməʊdəm, dem ǁ ˈmoʊ ] noun [countable] COMPUTING OFFICE a piece of electronic equipment that allows information from one computer to be sent along telephone wires to another computer see also email1, Internet * * * modem …   Financial and business terms

  • Wireless Home Digital Interface — Wireless Home Digital Interface  цифровой стандарт беспроводной передачи видеопотока. Основной разработчик и поставщик чипов  израильская фирма Amimon. Трансляция ведется на частоте 5 ГГц, на скорости 3 Гбит/сек. Стандарт позволяет… …   Википедия

  • Modem — Vorderseite eines V.90 Modems Das Modem (aus Modulator und Demodulator gebildetes Akronym oder Kofferwort, daher auch der Modem) dient dazu, digitale Signale über weite Übertragungswege zwischen zwei digitalen Endgeräten auszutauschen. Vom… …   Deutsch Wikipedia

  • Wireless access point — In computer networking, a wireless access point (WAP or AP) is a device that allows wireless communication devices to connect to a wireless network using Wi Fi, Bluetooth and related standards. The WAP usually connects to a wired network, and can …   Wikipedia

  • Modem ADSL — Asymmetric Digital Subscriber Line Pile de protocoles 7 • Application 6 • Présentation 5 • Session 4 • …   Wikipédia en Français

  • modem — noun ADJECTIVE ▪ broadband, cable, dial up, wireless ▪ fast, high speed ▪ data, fax ▪ …   Collocations dictionary

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.